CVE-2021-32546 Explained : Impact and Mitigation

Gogs before version 0.12.8 is affected by a critical vulnerability (CVE-2021-32546) due to missing input validation in

internal/db/repo_editor.go

. This flaw allows an attacker to remotely execute code by overwriting the Git configuration in their repository. The impact of this CVE includes the ability for an unprivileged registered user to perform Remote Command Execution.

Understanding CVE-2021-32546

This section will delve into the details of CVE-2021-32546 to provide a comprehensive understanding of the vulnerability.

What is CVE-2021-32546?

The vulnerability arises from the lack of input validation in

internal/db/repo_editor.go

, enabling an attacker to execute code remotely by manipulating the Git configuration in their repository.

The Impact of CVE-2021-32546

The impact of this vulnerability allows unprivileged registered users to achieve Remote Command Execution by modifying the Git configuration, potentially leading to unauthorized access and data manipulation.

Technical Details of CVE-2021-32546

In this section, we will explore the technical aspects of CVE-2021-32546 to understand the intricacies of the vulnerability.

Vulnerability Description

The vulnerability stems from the ability of an attacker to overwrite Git configurations in their repository, leading to Remote Command Execution through crafted configuration options.

Affected Systems and Versions

All versions of Gogs before 0.12.8 are susceptible to this vulnerability, exposing users to potential remote code execution attacks.

Exploitation Mechanism

Attackers can exploit this vulnerability by manipulating the Git configuration file in their repository, allowing them to execute arbitrary commands remotely.

Mitigation and Prevention

To safeguard systems against CVE-2021-32546, it is crucial to implement immediate mitigation steps and adopt long-term security practices.

Immediate Steps to Take

Users are advised to update Gogs to version 0.12.8 or the latest release to address this vulnerability and prevent potential exploitation.

Long-Term Security Practices

Implementing strict input validation mechanisms and regularly updating software can help mitigate the risks of similar vulnerabilities in the future.

Patching and Updates

Regularly monitor for security updates and patches released by Gogs to ensure the latest fixes are applied promptly.